CC BY
7LM-I-26
Development of logic system elements based on new physical
principles using quantum nanophotonics approaches for low-dimensional laser-induced surface topological structures
S. Arakelian, A. Kucherik, D. Bukharov, T. Khudaiberganov
Stoletovs Vladimir State University, Vladimir, Russia arak@ylsu.ru
1. The 4D-laser technology fabrication of new structures and materials is considered. Nanostructures and thin films with controllable topology vs time (when thermodiffusion, gas-dynamic evaporation in pore-like structures with bubbles, ablation products, ballistic movement of the particles in liquid, being depended on the laser pulses duration) are under study. The interaction effects of solid targets with laser pulses of different durations for obtaining various nanocluster structures can be viewed as the possibility of synthesizing the 4D-objects, when the result depends not only on the stationary topological/geometric parameters of the system, but also on the dynamic interactions in the system leading to different final stable structures of different topology. This is due to the fact that for different durations of laser pulses the specific mechanisms of nanostructuring are activated. Therefore, time plays the role of a control parameter responsible for phase transitions, as well as the spatial parameters do when nanostructures of various dimensions arise - from quantum dots (0D) to 3D nanostructures. In addition, for short laser pulses we have non-equilibrium/transient phase transitions over the steady-state pressure-temperature phase-diagram according to the laser trajectory of heating. Although the conventionality of this consideration is obvious (the equilibrium phase diagram cannot be used for non-stationary processes), but it allows to discuss the current trends and clarifying the basic physical picture.
2. The topology peculiarities of the granulated metallic film deposited on dielectric substrates - due to clustered metallic structures in frame of the topology photonics - result in several principal items being observed in our experiment:
(1) In electroconductivity
• the tunneling delocalized effect depends on the size of nanoparticles, distance between them and shape of tunnel barriers as well as vs variation of the thickness of the films with transition from amorphous to crystalline structure
• the thermally activated hopping regime of the electronic transport between localized centers in 2D-array
• the topology superconducting cluster trend and tendency similar to topological insulator and coupling of charged particles by dimensional parameters;
(2) In optical characteristics
• the broadening of electronic levels
• optical metasurfaces characteristics
• strong optical response
• variation of the e-state density (on Fermi-surface).
3. The principal problem is under our discussion how to determine specific numerical values of the topology control parameters of a nanocluster system relying on these general relations for the achievement of the desired final result in the experiment. This requires a detailed research (in both theory and experiment) of the influence of nanocluster topological parameters on the functional properties of the substances used. Modelling of fundamental physical phenomena, e.g. a Mott-like long range quasi-particles, anomalous Hall-effect due to topology - transverse symmetry breaking and arising of the particle quantum size effects (Landau stair dependence) require to do the exact detail analysis. Nevertheless, the discussed phenomena give us an opportunity to establish the basis of new physical principles to create the functional elements for topological photonics in hybrid set-up (optics + electrophysics) being controlled by quantum coupled states and nonlineai dynamic processes with possible tendency and trends to superconductivity in selected by chemical composition of nanostructures.
